21120022112101 has 8 divisors (see below), whose sum is σ = 23043317049504. Its totient is φ = 19197275995920.

The previous prime is 21120022112089. The next prime is 21120022112129. The reversal of 21120022112101 is 10121122002112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21120022112101 - 2⁵ = 21120022112069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120022412101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137124835 + ... + 137278768.

It is an arithmetic number, because the mean of its divisors is an integer number (2880414631188).

Almost surely, 2^{21120022112101} is an apocalyptic number.

It is an amenable number.

21120022112101 is a deficient number, since it is larger than the sum of its proper divisors (1923294937403).

21120022112101 is a wasteful number, since it uses less digits than its factorization.

21120022112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274410611.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21120022112101 its reverse (10121122002112), we get a palindrome (31241144114213).

The spelling of 21120022112101 in words is "twenty-one trillion, one hundred twenty billion, twenty-two million, one hundred twelve thousand, one hundred one".